【摘要】 在天竺桂上采用修枝措施控制日本龟蜡蚧Ceroplastes japonicusGreen,2 a试验表明:修枝后虫口密度大幅下降,天敌寄生率有所提高,对树木生长也有一定的促进作用,但效果只有1 a左右。从对蚧虫的控制和天敌寄生率来看,修枝强度在60%为最佳,其次是40%;而从对树木生长的影响来观察,40%修枝强度效果最好。建议每年修枝1次。为提高对蚧虫的控制效果,可于修枝后第2年的春夏之交,初孵若虫盛末期采取化学药剂补充防治,以进一步减小虫口密度。更多还原

【Abstract】 Cinnamomum japonicum was pruned to control Ceroplastes japonicus Green.The result of two years’ experiment showed that after the pruning,the population density decreased sharply and the parasitization of natural enemies increased.At the same time,it also promoted the growth of trees.But the effect only lasted about 1 year.In the aspect of the wax scale control and parasitization of natural enemies,60% pruning was the best and 40% pruning was the second while in the aspect of growth of trees,40% pruning had the best effect.Pruning once a year was suggested.更多还原